The term ‘secure gun storage or safety device’ means –
(A) a device that, when installed on a firearm, is designed to prevent the firearm from being operated without first deactivating the device;
(B) a device incorporated into the design of the firearm that is designed to prevent the operation of the firearm by anyone not having access to the device; or
(C) a safe, gun safe, gun case, lock box, or other device that is designed to be or can be used to store a firearm and that is designed to be unlocked only by means of a key, a combination, or other similar means.